721374 ÷ 18 
Let's see how many times 18 fits into 721374.

Advancing to step 1:
18 goes into 7 0 times with a remainder of 7.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
If we subtract 0 from 7, we get 7.
Take the next digit (2) from the dividend and append it to 7, then repeat: 72 / 18

Step 2:
If we divide 72 by 18, we get 4 and a remainder of 0.
Write down 4 as next digit of the result. 
Result so far: 4.0
If we subtract 72 from 72, we get 0.
Grab the next digit (1) from the dividend, add it to 0, then carry on: 1 / 18

Moving on to step 3:
When dividing 1 by 18, we get 0 with a remainder of 1.
The next digit of our result is 0. 
Result so far: 40.0
If we take 0 away from 1, we end up with 1.
Include the next digit (3) from the dividend after 1, then repeat: 13 / 18

Advancing to step 4:
The number 18 fits into 13 0 times, leaving a remainder of 13.
Use 0 as the next digit of our solution. 
Result so far: 400.0
Subtracting 0 from 13 leaves us with 13.
Bring next digit (7) of the dividend behind the 13 and repeat the process: 137 / 18

Step 5:
The number 18 fits into 137 7 times, leaving a remainder of 11.
Record the quotient 7 as the next digit in the result. 
Result so far: 4007.0
Deduct 126 from 137 and we're left with 11.
Include the next digit (4) from the dividend after 11, then repeat: 114 / 18

Going ahead to step 6:
When dividing 114 by 18, we get 6 with a remainder of 6.
The number 6 becomes the next digit in our result. 
Result so far: 40076.0
Deduct 108 from 114 and we're left with 6.
Since there are no more digits in the dividend, we add a zero to the remainder making it 60, and continue the process.

Let's proceed to step 7:
The number 18 fits into 60 3 times, leaving a remainder of 6.
Use 3 as the next digit of our solution. 
Result so far: 40076.3
Deduct 54 from 60 and we're left with 6.
Since there are no more digits in the dividend, we add a zero to the remainder making it 60, and continue the process.

Going ahead to step 8:
The number 18 fits into 60 3 times, leaving a remainder of 6.
The number 3 becomes the next digit in our result. 
Result so far: 40076.33
If we subtract 54 from 60, we get 6.
Since there are no more digits in the dividend, we add a zero to the remainder making it 60, and continue the process.

After the division, we end up with 40076.33 and a remainder of 0.006.